Grinding and polishing machine.



H. D. AGNEWh GRINDING AND POLIS HING MACHINE.

nrrucmbu rim) JULY 5.191s.

Pabentd NOV. 27, 1917.

l0 SHEETS-$HEET I.

'H. ILAGNEW. GRINDING AND POLISHING MACHINE.

APPLICATION FILED IULY 5,1915.

Patented Nov. 27, 1917.

H. D. AGNEW. Gnmmms AND POLISHING MACHINE.

APPLICATION FILED JULY M1916- Patented Nov. l0 SHEEIS-SHEIT 3- IAII H.D. AGNEW GRINDING AND POLISHING MACHINE.

APPLICATION FILED IULY 5.191s.

1,248,051 PatentedNov. 27, 1 911.

1 1o suns-sun 4.

,l. n. AGNEW GIIIDIIG AID POLISHING MACHINE.

APPLICATION "LED IULY 5.19M.

Patented Nov. 27, 1917.

(-W PD war I H. D. AGNEW.

GRINDING ANDROUSHING MACHINE.

APPLICATION run my 5.19".

Patented Nov. 27, 1917.

M) SHEETSSNEET 6- a Q n. 0. Miami GRINDING ANDIOLISHING MACHINE.

APPLICATION HLID Jul-Y 5 ill.

Patented Non-27, 1917 l0 suns-sun s.

H. n. AGNEW. GRINDING AND POLISHING MACHINE.

m I91 9- 7 m Mm N: G? E 0 H I I N 3: m m NQ m P v m \INH 5. nww $3M. wmm MG: I I I m: g n m m V m QNN NM QM! m MM n m H W in A E N V G N 11 NW B I @mmx mqj G .n 1 m 5 F 0 \MQNI ON 2 Q 1 Patented Nov. 27, 19,17.

H. D. AGNEW. (mmomc m rousnmu MACHINE.

APPLICATION FILED JULY 5.1915.

- UNITED STATES "PATENT OFFICE.

HENRY D. AGNEW, F OAK PARK, ILLINOIS, ASSIGNOR TO WESTERN ELECTRIC COM-PANY, INCORPORATED, OF NEW YORK, N. Y., CORPORATION OF NEW YORK.

GRINDING AND POLISHING: MACHINE.

To all whom it may concern:

Be it known that I, HENRY D. Acnnw, a diameters.

citizen of the United States, residing at Oak Park, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Grinding and Polishin Machines, of. which the followinis a fu 1, clear, concise, and exact description.

This invention relates to a machine for grinding and. polishing rods ortubes of materia such ashard rubber, fiber, or the like.-

1 In the electrical art, particularly tesulating bushings, thim atinghandles or buttons which are usually of'hard rubber, and a reat numberof iniles, disks, washers, etc, are utilized. Such insulating parts canradily'becut from hard rubber rods or tubes and then readily turned downto exact shape when necessary. Some-of these insu-- lating devices,particularly the handles or buttons for circuit controlling mechanisms,

should be ground down and polished in order to. rovide smooth surfacesfor the fin-- gers. he object of my invention is therefore to. producean efficient machinefor rapidly grinding and polishing theoutercylindrical surfaces of rods or tubes from which the insulatingdevices are cut.

Generally speaking, the machine is con-' structed with a hopper toreceive the charge of rods or tubes, from which hopper the lephony, thevarious manually operated .switch mechanisms are provided with actutheircylindrical surfaces smoothed and 1901- ished, the finished rods beingthen cut transversely to produce the sleeves, disks, washers or. thelike, or to produce blanks which areturned down toform the handles orbuttons for manually operated circuit cross-section are mounted inparallelism on devices.

Specification 01'. Letters Patent. Patented Nov, 27, 1917 Applicationfiled July 5, 1916. Serial No. 107,596. i

the treatment of rods or tubes of diifere'nt A machine embodying thevarious features of the invention is represented on the accompanyingdrawings in which- F gured is aplan view of the machine, F g. 2 1s afront'elevational viewthereof, F1g. 3 1s a side view looking from the nleft, A FFig. 5 is a sectional view on plane 5 5,

s. 1 and 2, ig. 6 is an enlarged plane 6 6, -Fi Fig. -7 is :1. pl 2 and6, V 4

Fig... 8. is a sectional. view on plane, 8 8, Figl'7, Fig. 9 is anenlarged sectional view on plane 9 -9,'Fig. 4,

sectional view on Fig. 10 1s an enlarged sectional view onplane 10-10,Fig. 5,

Fig. 11 is'an-en'larged sectional view on .plane 1111,Fi .5, Fig. 12 isa side view of the supporting head and stem shownin Fig. 10,

Fig. 13 is' a side elevational view ,of a modified form of guide block,

Fig, 14 is an enlarged swtional view on plane 1414,-Fig. 1, i

Fig.' 15 is "a. sectional view on plane 15-45, Fig.'14,

view .on plane rollers" with triangular ht igi. 4 is-a side view lookingfrom the 2 an view on plane 7-T, Figs.

Fig. 16 is a sectional View on plane The supporting frame for themachine comprises the front section 1 on which the chute and chuckmembers are mounted, and the section 2 on which the indstone is mounted.On the framesectmn 1 at the right end. thereof the ho i r' structure His mounted. Beams 3. and of' right-angular top of the frame part 1 atthe right end Provision is also made for adjusting the thereof withtheir vertical sides 5 and 6 hopper, the chucks, and the grind-stone forseparated to provide the space 7 for a belt 8 which is carried bypulleys 9 and 10 on shafts 11 and 12 respectively, which are journaledin the beam sides and G. On the horizontal flange of the beam 3 ismounted a plate 13 which supports a row of brackets 14 to which the oneside 15 of the hopper H is secured. The horizontal flange of the beam 4carries aplate 16 on whichis mounted a row of braclmts 17 for supportingthe other side wall 18 of the hopper. The upper sections of the hoppersides deflect outwardly but the lower sections are parallel andseparated to leave the verticalpassageway 19 for the tubes or rods R tobe treated. The upper limb of thebelt runs along directly below thepassageway 19 to receive the rods and to convey them one at a time tochuck mechanism which will be described later.

shafts extend 'parall'elly outwardly and As shown, the middle.

In order to. feed the rods one at a time to the belt escapementmechanism is provided. The side wall 18- of the hopper has pivot to abar 31. crank arm is extended beyond its plvota-l connection with thebar 31 and has piiotal connection with one end of a connecting rod Inately swung awa from and below the next 32, the other end of the rodbeing pivoted to the crank pin 33 on a gear 34: which meshes with apinion 35 on the belt pulley shaft 12. As this shaft turns, the gear 34will be rotated. and the middle crank arm will .be rocked, such rockingmovement being transmitted to the other crank arms by the bar 31. Theangular spacing of the escapement blades on the shaft collars and theangle of rock is such that the blades 25 and 26 will alternately enterthrough the openings 20, the lower blades being swung alternately belowand away from the lower most rod and the" upper blades being alterrod.such operation restricting the rods to drop one by one to the bottom ofthe passageway 19 to the conveyor belt. The wings 29 at the upper endsof the shafts are alternately swung into and out of the openings 20 toagitate the rods and to prevent pack ing orvjamming thereof.

At the inner end of the passageway 19 adjacent the lower end thereof arethe feed, rollers 36' and 37 whose surfaces are conicalin order. toreadlly receive between them-.

the inner ends of the rods, as clearly shown in Fig. G. The feed roller36 is pivoted on shaft 38 supported on the rear hopper section, whilethe other roller 37 is secured to shaft 39 supported on the front hoppersection. At its lower end this shaft carries a bevel gear 40 whichmeshes with the bevel 7t with the gear secured on the inner end ofcounter shaft 51, this shaft being journaled in the bracket structure 48and in the outer wall of supporting fraine section 1, the outer end ofthe shaft carrying a gear 52 which is engaged by the pinion 53 on theouter end of the main shaft 54. This main shaft carries the gear 55driven by the pinion 56 on the shaft of electric motor M .mounted within.the frame section 1. Bo-

tation of shaft 11 results in propulsion of the belt 8, operation of theescapement mechanism and drive of the feedrollers 36 and 37, theserollers coiipera-ting with-the belt to shift the rods longitudinallytoward the left into the chuck mechanism in which they are rapidlyrotated in front of a grinding stone. In order to keep .the belt tighthave shown belt tightener mechanism. As best shown in Figs. 2 and 6, thearm 57 mounted on the shaft 58 journals at its front end the roller 59,and depending from the shaft at the rear end thereof is the arm 60engaged by the pull bar 61 which is en-J'- circled by a spring 62abutting between t-h'e nut 63 on the rod and the bracket 64, the iarrangement being such that the roller'59 is held pressed against thelower leg of the belt.

The rods are fed one at a time into the chuckmechanism and are fedslowly through T' the chuck mechanism and during transit therethroughare rapidly rotated while they are being ground. Chucks 65 and 66' aremounted on the inner ends of. hollow shafts 67 and 68 respectively,these shafts being journaled in bearing frames 69 and 70 mounted on theframe structure 1, as clearly shown in Figs. 1 and 2. The shaftscarryrespectively the gears 71 and 72 which mesh with intermediate gears73 and 74 driven by the gears 5 and 7 6 on the counter shaft 77, a. gear78 on this shaft meshing with the gear 79 on the main shaft 54 whosedriving gear 55 meshes with the motor pihion 56. The shafts being hollowand coincident with the path of the rods delivered from the chute, therods enter shaft 67 and then pass through the chucks 65 and 66 and-thenThe driving 76 60 is shown.

A 84- of the disk 81,

wheel 87.

sak favorns 92 and 93 which mesh through shaft'68 from which they aredelivered, the entrance end .of the shaft 07 being preferably providedwith a beveled entrance thimble 80. of substantially identicalconstruction and in Figs. 14 to 18 the construction of chuck The mainsupporting disk 81 of the chuck has the internally threaded flange 82extending therefrom concentric with its center and receiving thethreaded inner end of the hollow shaft (38, a thirnble 83 extending intothe shaft end and having threaded engagement in thethimble having acomcal bore for guiding rods' into' the shaft 68.

Journaled on the shaft 68 is a hub 85 which at its inner end supportsthe gear 86 and which at itsouter end supports the sprocket Atdiametrically opposite sides of the gear 86 the shafts 88 and 89 arejournaled in the disk 81 and carry respectively gears 90 and 91 whichmesh with the gear At their inner ends the shafts support wheels 94 and95] respectively. Thefworm 'ournaled in the brackets 97 and 98extendtiont, he axes "mg inwardly from the disk 8l." Likewise; r r wormwheel 95- is mounted on the of disk 81 and extending at rightanglesjonrnal'edinbrackets 100 and 101 extending wardly {from the disk, ballbearings 102 0 and at equal distances to one side of the center ofthedisk 81-. .Secured to the inner face with the axis of shaft 90- are theguide blocks 103 and 104 in which the plate 105 is slidable radially 'onthe disk and from the inner 4e frames 1% anch end of the plate at thesides thereof bearing 107 extend at right angles and are connected by ayoke 108. Centrally of this yoke isthe pocket109extending ra- V diallyoutwardly for receiving a compression spring 110, the other end of thespring resting in the pocket of a plug 111 having threaded engagementwith the annular shelf 1-1'2 extending inwardly from the disk 81.

T he. spring by'acting against the yoke tendsto force the plate 105radially inwardly and the bearing frames thereon. In frame 106 is a ballbearing 113 which receives the hub 114, 11.3 vvhi 1 receives the hub'110. A shaft 117' extends centrally through the hub 11.6 and at itsinner enr has threaded engagement v with the hub 114, and between thehubs the shaft supports the feed roller 118. The inner end of hub 114carriesa coupling head 119' and the adjacent end of shaft 96 carries acoupling head 120, the coupling head I'm-having coupling pins 121 forengaging in the holes 122 of the coupling head 120 and the coupling head120 having coupling The two chucks are the central opening.

tion, with worm 'refera'bly provided to reduce fric-- the shafts areparallelgaging in cross while inframe107 is the ball bearing pins 123for engaging in the holes 124 of the coupling head 119. \Vith thisarrangement tli' rotation of shaft 90 is transmitted to the hubs andtoshaft 117.

Diametrically opposite the guide blocks 103 and 104 are similar guideblocks 103' and 104for a plate105' which carries the bearing frames 100'and'lOT' connected by a yoke 108, a spring tendin to force the platewith the bearings ra ially inwardly; The bearing, frames journal thehubs 114 117', the arrangement being exactly the same as in connectionwith the shaft 117, the shaft 117' being connected with the shaft 99 bythecoupling heads 119 and 120.; Between the bearing frames the shaft 117journals the feed roller 118, this feed roller' being in' thesame/radial, plane as the roller and which receive the shaft 118 and therollers'having the peripheral ooves 125' and 125' respectively which, inFi 15, are of semi-circular cross-sece opposed grooves cooperating to1eceiv'e and engage with "the cylindrical sides of the rods R travelingtherebetweenh The semi-circularg'rooves of'the'rollers in the firstchuck through which the-rod is fed, are knurled to insure ,a firm grip jon said rod. -,The corresponding grooves in the roller in the secondchuck are smooth 'to avoid marringithe smooth surface ofsaid rods after'theyhave been ground accurately to the desired diameter. n order thatthe rollers may be renewed or in order-that be substituted to provideother rollers may different shape or different size-passagewaytherebetween-for the rods; the hub of eaci roller has pins 126 and 127extending-therethrough beyondathe sides thereof for enslots- 128 and'129 in the inner faces of hubs 114 and 155 respectively. To remove aroller its sup orting shaft is unscrewed at its inner en from the huband the shaft is then'withdrawn whereupon the rollers can be slid frombetween the hubs. To re'insert aroller its pin ends are first slidinto-the cross slots of the hub j and then the shaft-is inserted andscrewed into place. readily-screwed. or unscrewed the outer ends thereofare polygonalas shown to receive a wrench for other tool.

The sprocket wheels 87 associated with the To enable the shafts tobechucks 65 and 66 are connected by chains 130 and 131 with sprocketwheels 132 and 133 on the shaft 134, a drive wheel 135 on this shaftbeing connected by a chain 136 with the sprocket wheel 137 on shaft 138,a ear'pinion 139 on this shaft being driven y the gear 140 shaft havingthe gear whr l 142 driven by the gear wheel 143 on shaft 144, this gearmeshing with thegear 145on shaft 54 on which is the driving gear 55connected with on shaft 141,;this' the motor pinion 56. The chucks arethus rapidly rotated around their axes to axially rotate the rodspassing thercthrough, and

I at the same time the guide rollers are slowly rotated tolongitudinally propel the rods through the chucks. To protect the rodguiding and propelling mechanism in the chuck a cover146 is providedtherefor, the cover having the removable central plate 1 17 which hasthe centrally located thinible 148 for guiding the rods passing throughthe chuck.

During travel of the rods from chuck 65 to chuck (36 they are held inengagement with a grind-stone 149. This grind-stone is mounted on shaft150 journaled in hearing boxes 151- and 152 at the front ends of a.U-shaped frame 153. This frame is slidable on guide-ways 154: and 155extending at right angles with the chuck axes.

nectedby chain 167 with the sprocket wheel 168'on shaftlfif).whichextends forwardly to the front of the machine and there terminatesin hand wheel 170. By turning wheel 170 the frame 153 can be shiftedtransversely of the machine to adjust the grindstone with reference torods passing between the chucks.

The grind-stone shaft 150 carries at its end a double gear 171 whichmeshes With the bevel gear 172 on the shaft 173 which is journaled inbearing frame 174 which will adapt it to swing about the grind-stoneshaft axis (see Figs. 1 and 4). The shaft is also free .to shiftlongitudinally with reference to the gear 172. At its-lower end theshaft carries a bevel gear 17 5 which meshes with the gear '176 on theshaft 177 which shaft is suitably journaled on the machine frame. Abearing frame 178 which is pivoted concentric with shaft 177 has thebearing sleeve 179 for the shaft 173, and the gears 175 and 176 aremaintained in mesh during swing of the i shaft 17 3 as the grind-stonestructure is adj usted transversely on the machine. driving train forthe shaft 177 is as follows: motor pinion 56, gear 55, shaft 5t, gear180, gear 181, shaft 182-, gear 183, gear 184, shaft 185, gear 186, andgear 187.

As there is some distance between the- The chucks, provision is-made forpreventing tlexurc of the rods and for holding them straight and againstthe grind-stone While they are being rotated by the chucks and propelledthereby. At the front of the machine a guide block 188 is provided onwhich the frame 189 is mounted to slide laterally parallel with thegriudstone axis. Journa led in the end of the frame 189 and thread edthrough a. block 190 secured to the machine frame is the screw shaft 191which carries a bevel gear 192 meshing with the gear 193 on the shaft 1%which terminates at the front end of the machine in the hand wheel 195.\Vhen the hand wheel is turned the frame 189 is shifted laterally. Thetop 189 of the frame 139 overhangs the machine frame in frontof thegrind-stone and shiftable on the frame top at right angles with thegrind-stone axis is the carriage 196, the carriage base havingdove-tailed connection with the frame top, as clearly shown in Fig. 10.-A screw shaft 197 is journaled in the front end of the frame 189 andthreads into shown in Fig. 5, the guide t0ol, 203 is secured in' thehead 201 and has the semi-cylindrical guide groove for engaging with therod R to hold it against the grind-stone while it is being turned andpropelled. The

tools are interchangeable and have dovetailed connection with the head,.as clearly shown. When rods or tubes of different diameters are treatedcorresponding tools are inserted in the head. By means of the hand wheel19S adjustment can readily be made of the tool with reference to thegrind-stone. Above the tool a water discharge noz z1e 204 is providedfor directing water to thegrindstone. The grindings are carried with thewater into a receptacle 205 formed below the grind-stone and the waterwith the grindings particles therein flows through openings 206 into a'trough 207 from which it runs through spout 208 into a receptacle 209which is connected with the sewer by pipe 210. A strainer 211 isinterposed between the spout 208 and receptacle 209 for retain ing thegrindings particles in order to prevent wastage. Where the tubes androds are of rubber the grindings particles, when thus collected, can bere-diss'olved and utilized.

As the grind-stone may wear unequally it must occasionally be trued upand to accomplish this a truing tool can be inserted in the head 201 inplace of the guide tools and then by manipulating the hand wheels 195and 198 the truing tool can be adjusted with Likewise, the plate 105'has the bol t' 217 ex- Q tending therefrom through the .lu 2155 ation.

Referring again to the chuck mechanism which rapidly rotates the rodsaxially during the grinding operation, the plates,105 and 105whi'chlsupport the bearing frames .for the feed rollers will tend, to bemoved radially outwardly by centrifugal force against the action of thesprings 110 and 110., the faster the. chucks rotate the greater will bethe tendency for such outward movement. This will, of course, var thepressure of the guide rollers on the rods and will interferenvith'proper support and feed of the rods. Provision is therefore made tocounteract such centrifugal force and to keep the feed rollers centeredand their pressure a ainst the rods equalized and uni form. Re f erringto Figs. 14 to 18, in each chuck the hub 82 pn thedisk 81 journals acollar 212 which has the reduced section 213 which abuts against theinner face of gear 85. Equalizer plates 214 and 214 have centralopenings forreceiving the outersections 213, these openings bein of thesame width as the diameter of sai -se'ctions'-.,but being of slightlylarger diameterijlongitud'f nally in order that they may} movef longitug\dinally on the collar. Extending outwardly from the back of the plate105 is a lug'215,

this lug projecting through the enlarged opening 216 in the .disk 81 andextendingtherethrough is the bolt 2l7whi'ch clamps the lug between thebolt head and a collar 218. The outer end of the, bolt extends throughan .opening 219xin the equalizeru V 1 and'nnifori'n diameter. I I

- In order totpreventstrainjon the various h plate 214, this opening beiof the same diameter as the bolt. The olt headlalso' extends through alongitudinallytelongated opening 220 in the plate 214', a nut 221reqeivin'gthe threaded end of the bolt'to hold the plates togetheragainst the collar 218.

which passes through the openin .216 in the disk 81. the outer end ofthe olt 'passing through the elongated opening 220 m equal-n iizer plate214 and through the opening 219' in equalizer. plate 2'14hthe openingbeing of c the same diameter as t e bolt, the nut 221' receiving thebolt end. The equalizer-plate 214,

which is securedat one end to the bolt 217 'extending from plate 205 hassecured to its opposite end a weight 222, and the equalizer plate 214which is secured by bolt 217 to plate 205' has secured at its oppositeendthe bolt 222'. When the chuck is rotated these weights tend to moveradially outwardly centrifugal force sufliciently to counteract anytendency of the bearing frame supporting pla't'es105 and 105' to moveoutwardly. -.Extending outwardly from the col lar 212 are thediametrically '0 posite pins 223 and 223', die pin 223 exten ing throughthelongitudinally elongated and widened slot 224 in equalizer plate 214and through the transversely elongated slot'225 in the equalizer plate214-. The pin 223" extends through the transversely elongated slot 225aljtl equalizer plate214 and through the longitudinally and transverselyextended slot 224 in eq-lalizer plate 214. \Vith this arrangement anymovement by centrifugal force in diametrically opposite directions willbe equalized and in order to keep the passageway between the feedrollers 118 and 118 centralized and coincident with the axis of thechuck through which the rods R pass. In other words,.one of the weightscannot move radially outwardly a greater .distance than. the other, forany outward will cause equal outward'movement of such other plate andits weight. The arrangement is thereforefsiicli that any outward'movement of the bearing frame supporting plates 105 anaiioafbycentrifugal force wil be counteracted' byi the weighted equalizerplates,and the pressure of the feed rollers against the rodstraveling'therethrough will be constant and 'uniformandthe -rodspassingbetween'the feedxrollers will .be held in axial alinemen't with thechuck' axes, there-1 sult being thatthe rods willjbe' ground off i andfinished ,witha truecylindrical surface bearings for the shafts'll'l'and 117 and 96 -and'96' the holes in'coupling heads 119 and 120 and 119and 120' are of larger diameter than the coupling pins received thereby.Inorder to liinit thedisplacemen't of the'feed justableabutment-screws'226 and 2265 are provided in lugs 227 and 227 extendininwardly from the disk 81, the heads of t 'ese screws abuttingrespectively against the in; ner ends of the plates 105 and 105 when a.i j

rod leaves the feed rollers in .order to prevent the feed rollersfromcoming into con-- roller supporting bearing structures when ,there is norod within the feed rollers, ad-- VVhen the rods are fed from the hopperi they'are more or less rough and of var mg I diameters and the groovesin the feed r0 lers of chuck 65 are therefore preferably tri-' ferentdiameters.

' 18 are slidable transversely on the beams ,5 sections 23:37am} 2341111 ltl "the shaft is? provided j 235; A stud 23ti cxtendsidouthreading'233. Extendin v ,screw shaft is turned tlie'phit U "perstructures thereon-;are;shifted toward 3 and 4 respectively in orderthat the width of passageway 19 may be varied. .Extending transverselyof the beams and& and journaled in the vertical, limbs thereof is ascrew shaft 230, this shaft being locked against longitudinal1n1ovement'" by collars 231 and 232. Theshaft below the top f- 1- aismnit-he the beams 3 'and4 has leftjand theplate lii through th 'sloit 5237 n and ;fat-

its lower endsfsu'pports bloc 238 which -threadedly, receives 'tlthreads 23% of the.fscre w. shaft Ylien tl or away from each othertoadjust the width of. passageway '19 .to therdischargebelt 11. 1 Ti)maintain meshing engagement, between the gear 4lpa nd ;the,gear l0 onthe shaft supporting feed roller :37. the-gearAl-is splined on theshaft/l2 \to be shifted longi tudinally thereon when the hopper halvesare separated or brollghttogether. Provision is also made for permittinglongitudi-- mil-shift along the gear-'35 of the gear 34 which controlsthe-operation of theescape ment mechanism: mounted on. one" of thehopper sides. Thegear 34; is mounted on a-stnb shaft :2-l1 whichextei1ds;from the hopper structure, side. As the hopper sides areadjusted the gear 34 will then shift along the gear 35 which will remainin mesh therewith. VVh'en the hopper is adjustedfora rod ortube ofdifferent diameter, the'escape ment blade supporting collars 23 and241aiid the spacing collar 27 are changed, depend ing upon the size ofthe rod'whose flow and escape is'to be controlled. V

The ends of the hopper are preferably closed, end plates 242 and-243being shown, these plates being rigidly secured along one edge to one'ofthe hopper sides and the other edges of the plates having pin and slotconnectionf2-ll and such connection permitting adjustment of the hopperside W g the block 240 whichitli readedlyff rece yes the a p f saidchuck -at opposite si es of its center, the hop-T ing rods or tubes, thecombination of a hop per, means for feeding rods or tubes from thehopper one at a time, chucks for receivng the rods or'tubes from thehopper, feed mechanism within said chucks adapted to yieldingly clampsaid rods to shift them axially therethrough, means for rapidly rotatingsaid chucks and said feed mechanism with the rods passin therethrough,means within each'of said'c ucks for neutralizing thece11trifuga11-force tending to overcome the; clamping engagement of said feed mech-'d rodswhereby said clamping aintained imiform, and a ngaging with saidrods eir... passage through said hine, rinding cylindricalhollow.;;shaft journaled 1n sai bearhuckgscuted t0 the shaft end axiallyguideways on thzreof, vl radially e'xtendin shaft and said=passageway,yielding means tending to force ,said plates radially inwardly wherebysaid .rollers will exert ds combinationo 'a supportin bearclampingactionon rods passing therebe- L tween, means for'rotating' said'rollers topropel rods axially through" the chuck, means for rotating said shaftand-chuck, and

grinding mechan sm operating on said rods.

duringpropulsion and rotation thereof.

grinding rods, the.

, bearing frames 3." In a machine for combination" of a ohuc mounted onthe'chuck at opposite sides of Jits-center and shiftable radially, feedrollers'journaledin said bearing frames in a diametral plane and havingperipheral grooves for forming an ax1al passageway for rods to beground, yielding means tending to force said bearing frames toward eachotherto etfect'clamping engagement of the rodsby said rollers, means forrotatfog said rollers to propel rods longitudinally. means forrotatingsaid chuck to axiali rotatei'ne rods (luring propulsion thereof,means Within said chuck for counteracting centrifugal force acting onsaid bearing frames, and grinding mech anism for engaging with said rodsduring propulsion and rotation thereof. ,i

4. In a grinding machine for rods, the combination of two, chucks,diametrally opposed hearing frames in each chuck, a

feed roller journaled in each bearing frame,

said rollers being in a common dlametral planc'amlhaving peripheralgrooves formihg said chucks in synchronism whereby said rods are axiallyrotated during propulsion thereof, means in each chuck for neutralizingthe centrifugal force tending to' shift said bearing-frames apartwhereby the :clamping engagement of the; feed rollers sidesiof saidchuck and shiftab feed rollers on said frameshaving 'periph-- gal lfmcetcndingfto shift the bearing frames. outwardly whcrebyj the pressure ofsaid chuck, centrifugal means wit imsai chuck acting on said bearing,frames dur-. ing' rotationof the chuck to counteract the centrifugalforce tending to shift such the'rodsg will be maintamed'uniform, agrind-stone engagmg the rods durmgfiherr passage from one chuck to theother, and means for-- rotating said grind-stone in a direction-opposite to that of the rotation of thefrods; 5. In a machine forfinishing'rods, the combination of a chuck, meansfor feeding rods onezita time axially into said chuck;'

bearing frames at diametricallyopgosite e ra c'ral grooves cooperatingto form an axial passageway between them. to, receive the-,- rods,springs acting on said heating vframes. to force them' radially inwardlyto cause t 1c rollers to exert clampin action on ithe rods, means forrotating sai rollers to r I i longitudinal movement of. the other platestendin propel the rods, means for axially. rotatin frames outwardly, agrind-stone adjacent the chuck outlet for operating'on said rods, and anadjustable abutment for holding said rods in alinement and against saidgrindstone.

6. In a machine for finishin rods, .the combination of a chuck, means i0rods one at a time axially'into said chuck,

bearing frames at diametrically. opposite sides of saidchuck'and'shiftable radially,

feed rollers on said frames having periph eral grooves cooperating toform an axial passageway between them to receive the rods, springsacting on said bearing frames I tending to force them radially inwardlyto cause the rollers'to cxertclampin'g action on the rods, meansfor'rotating sai rollers to propel the rods, means for axially rotatingsaid chuck, plates 'cxtending diametrally in said chuck, -each platebeing seially,

r.feeding I rods or, tribes, means for e ect ng relatlve end, said platebeing adapted to shift longitudinally, means for causing said platestorotate with the chuck, said plates and weight :csponding tocentrifugal force to ,counter-' act the centrifugal force tending-toshiftthe bearin fran'ies outwardly whereby the pressure fol the feedrollers against the chucks will be maintained uniform, and a grindstonead acent the chuck outlet for operati 1g on said rods as they pass fromthe chuck. 7. In a machine for finishing rods, the

combination of a chuck, means for, feeding rodsone at a time axiallyinto said chuck, hearing frames at diametrically .opposite sides of saidchuck and shiftable radially, feed rollers on said frames havingperipheral grooves coiiperating'to form aii axial passageway betweenthem to receive the rods. springs acting on said bearing framestendingtoforcc them radially inwardly to cause the rollers to cxertclampingaction on-jtho rods, means for rotating said rollers to pro p -lf theLi-oils. means for a xially more iiigfsaidjclu1ck,',pl atesextendingdiametrally In centrifugal, force" tocounteract thecentrifuthe-fced rollers; against the chucks will be -maintaineduniforili, means interconnecting said plates for-translating thelongitudinal increment 'of one plate into-corresponding whereby thepassageway between said feed "rollersswill' be maintained central withreference to the clm'cl 'r-axis,-and.a grind-stone adjacent thechuck.outlet for-operating on 8. In 'a machine of the class described,the

aid;lchuckseach plate beiiig sccured'at onelendlofone'fof said bearingframes and .havi|1g a-,\\'eigl1t at its other end, said plate beingadapted to shift longitudinally,-means ',.fo1"= causing saidplatesto'rotate with the a; chuck, said plates .and weight..responding tocombination with two parallel supporting beams having a passagewaytherebctween, a

apart to. leave a discharge assageway for shift of'said'hopper sidesections on said hopper structure comprising side sections mounted onthe-respective beamsand spaced.

beams to vary the width of said, discharge passageway, and abelttraveling below t discharge passageway outlet to receive the p the classdescribed, the combination ot'supportingfra'me sections having a belt'run-way therebetween, a

rods orftubcs.

9, ln'a machine of hopper structurecomp'rising' -hopperside sectionsmounted on the respective frame to leave a discharge passageway for rodsor I sections and separated at their lower ends tubes, means .forshifting said hopper side sections to adjust the width of said dischargepassageway, a belt traveling in said run-way below the dischargepassageway to migage with the rods or tubes to shift them way one. at atime, feed rollers for receiving.

'0 leave a discharge passageway for rods or tubes, means for shiftingsaid hopper side sections to adjust the width of said dischargepassageway, a belt traveling in said run-waybelow the end of thedischarge pasrods or tubes through the discharge passage one end of therods and .for propelling said.

dischar e passageway and away therefrom,

" other end of said rods to assist in shifting said rods from thedischarge passageway.

I capement mechanism for controlling t e 11. In a machine of theclassdescribed, thecombiuation of a hopper structure comprising twohopper-side sections separated )y a discharge passageway, .means for adjusting said side sections to vary the width of said dischargepassageway, :escapement mechanism for feeding rods or tubes one at a.time to the bottom of said discharge pas-' sageway, feed rollersjournaled on said side sections and projecting into said discharge:

passageway to receive the rods or tubes, and means for rotatlnlengthwise propulsion of said rods out of the discharge passageway.

. 12. In a machine of the class described,

thc coinbination of a hopper having spaced sides forming a dischargepassagewa escape of rods or tubes one by one to the bottom of saidpassageway, a belt traveling below said passageway, feed rollers at thebottom of said passageway near one-side thereof for receiving one end ofthe rods, said belt receiving the other ends of said rods andeotiperating'with said feed rollers to shift the rods longitudinally outof the passageway, rotary supporting mechanism for receiving the rods,and grinding mecha nism for acting on said rods when in said rotarysuppm'ting mechanism.

13. In a machine. of the class described, the con'ibin ion of a hopperstrueti-ire bar ,in g a vertical discharge passageway through whichhorizontally disposed rods or tubes max pass, escapement mechanism f rcontroh lingthe one at a time passage of rods or asections and separatedat their lower ends 15".

sageway, escapement mechanism. for ceding rods longitudi ll along thebottom of the:

Said he Ceiling and ging with-Ithe'fl said chucks f olg reeeiving the.rods one at a .time' .ia'ndzp opellingggthem axially there- "erate onthe'j'rods as to the othe'r.'-

tubes toward the bottom of said passageway, feed rollers at the bottomof said passageway at one side thereof and projecting theremeans foraxially rotating said chuckmech-l anism to'rotate the rods axially,meansin the chuck mechanism for axially propelling the rodstherethrough, and grinding mechanism acting on said rods during suchrotation propu sion by the chuck mechanism.

14. In a machine of the class described,

the combination of a hopper structure comprising two side walls having anarrow discharge pasageway therebetween for rods or tubes, means-foradjusting said sides to change the width: of said passageway, .es-

capemeht mechani sm mounted on one of said sides} .to.- controlj thecheata time travel of rodsrto, of said passageway, 'Lmeans iuthebo winofsaid passageway for shifting 'i.t helj l "ods d axially therefrom, two

chucks arranged axial aline nent with the discharged r- 'rods;pi'opulsion mechanism in through,.means'gfork 'fitating said chucks torotate the rodslduring their passage there through, and a grind-stonepositionedto op-' ey p'ass from onechuck 15. In'aniachin of classdescribed,

"the. combination of a hopper for receiving rods ortubesin' horizontalposition, a.dis

charge pasageway leading downwardly from saidhopper, g.-1 1 pluralit ofupright shafts adjacent one side of sai passageway having escapementarms thereon for projecting into said passageway to. control the one atatime rods ortubes to the bottom of said passagewafyfwhen said shaftsare. ro tated, means i or simultaneously rotating said shafts, means atthe bottom of said passageway for propelling the rods. axially throughone side of the passageway, a chuck positioned axially to receive thedischarged rods, means in said chuck propelling the rods axialltherethrough, means for rotating said 0 uck to rotate therods duringpropulsion therethrough, and a ind-stone for operating on the rods as tey pass from the chuck. 7

16. In a machine for 'nding rods or tubes, the combination 0 hoppermechanism for feeding rods lengthwise one at a time, a chuck, aplurality of feedwheels in said chuck having opposed peripheral facesformin a passageway for receiving the rods,

passage 0 means or rotating said wheels to propelthe' anism foroperating (on the rods as they. pass trifugal force to cause the feedrollers to exljfrom said chuck. ert uniform pressure against the rods,means 17. In a machine of the class described, for rotating the feedrollers to propel the the combination of feeding means for feedrodsaxially, means for maintaining said 15 '5 ing rods or tubes lengthwiseone at a time, rollers in position to hold said rod in axial -a-chuck5radially'shiftable bearing frames in position during, propulsion androtation "said", chuck, feed rollers journaled in said thereof, andgrinding mechanism for acting bearing frameswvith their peripheral faceson the rods as they come from the chuck, opposed to form anaxialpassageway for In witness whereof, Ihave hereunto sub- 20 10 the rods,means for rotating said chuck, scribed my name this 28th daof June,1916. means within the chuck controlled by 'cen- HENRY AGNEW.

